Features: Achieve accurate and stable signal generation for wide testing and experimental needs. User friendly control and a easy to understand ensure operate for user of all level. For educators and researcher, providing a practical tool for electronic experiments and research projects. Enhances the performances of electronic device by simulating various voltage signal to test their input and output capabilities. Perfect for electronic device testing, instrument calibration, and electronic teaching applications. Specifications: Supply Voltage: 7-28VDC Output Voltage: ±10V Output Current: 20mA Display Accuracy: 0.01V Output Accuracy: 0.01V Size: About. 80x42x40mm/3.15x1.65x1.57in Package Includes: 1pc Signal Generator note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.